Feature request user friendly sign pdf

Sign pdf is very difficult to use. Currently the user must choose x and y with no reference or preview. 
Instead this could be determined by the user dragging a box on the desired page it would be much more useable.

<img width="1260" height="2800" alt="Image" src="https://github.com/user-attachments/assets/8a2f2cbe-1274-4d7e-8ee6-5e3accc7272f" />

 